Machinery for boring brush-blocks



UNITED STATES? -,S. TAYLOR AND A. R. DAVIS, OF EAST CAMBRIDGE, MASSACHUSETTS.

MACHINERY FOR BORING?I BRUSH-BLOCKS.

Specification of ,LettersPatent'No 5,974, dated December 1,9, 1848.

vT all whom t mayjconcern:

Be it known that we,-SAMUEL TAYLoRand ABo'r R. DAVIS, of East Cambridge, in the county of Middlesex and State of Massachusetts, have invented a new and useful Machine for Boring Brush-Blocks; and we do hereby declare that the same is fully represented and described in the following specification and accompanying drawings, letters, ligures, and references thereof.

Of the said drawings, Figure l, denotes a top View of our said machine. Fig. '2, is a front elevation of it. Fig. 3, is an end view of it. Fig. 4, is a rear elevation, and Fig. 5, isha central vertical-and transverse section.

The object of our invention is -to bore in several brush blocks, at one and the same time, the holes for the recept-ion of the bristles.

In the said drawings A, denotes the frame work kfor supporting the operative parts of the mechanism.

B, B1, B2, B3, &c., are a series of drills orbits arranged respectively in the ends of mandrels, C, C1., C2, C3, &c., supported respectively by stationary puppet frames D, D1, D2, D3, &c. Each drill is put in revolution .by one of a series of endless belts E, E1, E2, E3, &c., which passes around one of a series of pulleys F, F1, F2, F3, &c., vdisposed and fixed respectively on the mandrels. Each belt also passes around one of a series of pulleys G, G1, G2, G?, &c 'fixed on a horizontal driving shaft H, disposed -as seen 4in the drawings.

I, is what we term the lay beam or board. It is ,arranged with respect to the series O drills as seen inthe drawings, and is supported at its two ends 'by universal joints K, L, on the tops of two swords M, N, or upright bars, each of which is hinged or jointed by a universal oint a, to one end of one of two levers O, P, which are united vtogether at their other ends, and have ak weight Q, placed upon them for 'the purpose of counterbalancing the weight of the lay beam and mechanism applied to it.

4In the middle of the front face of the lay beam is a circular plate or gear wheel R,

which is placed in opposit-ion with the said beam, and attached to the beam by afscrew or center pin S, so as to permit of the revolution of the plate on the said screw. There -is also another and similar cogged wheel or plate T, or T1, or T2, ailiXed to the lay beam in a similar manner, and directly opposite .each bit-t or drill as seen in the drawings. `Between VVeach two of said gear wheels ror plates there is a smaller gear or pinion U. The teeth' of the said pinion, (which is made to revolve freely on ascrew V, screwed in the lay beam,) laremade to engage wijththe teeth of the wheels yimmediately adjacent ,to it, kso that when the central cogged wheel or plate is turned on its center screw in veither direction, all the otherlcogged wheels T, T1,

,T2, &c., will be lsimultaneously moved it and the pinions in the `.same direction. A front viewof a portion of the yfront face of the 'lay beam and one vof the wheels T., T1,

&c is represented in Fig. 6. Each of said wheels T, T1, &c., is to 'havesome ,contriv- Aance applied toits fro-nt face for the vpurpose of holding in position and on the plate, a

vbrush `block W, see Fig. 2.' That ywhichwe employ `consists of ktwo parallel rulers or ing hold of which a person may ,movethfe j bar on its center pin, and thereby cause the two bars b, c, to approach toward or recede fromv one another in armanner similar to ythat inwhich anordinary set of parellel rulers are Vmade to operate together. ,If'the joints are made-to operate with a `,suilicient degree of stiliness, land the two internal edges ofthe bars b, c, are provided with ,suitable `con- `trivances for grasping and yholding a block,

when-one is placed, between them the two bars may "be moved so ,as4 to inclose it or hold it ffirmly yas between two jaws.

The .gear wheel or plate B is provided with a similar contrivance k.for k'holding pattern yblock or plate XA, in whose lfront surfacea series of holes or interstices are made, so. as to be arranged in the `same relation to veach otherv as the holes we may desire to bore through each .one-.of the brush blocks.

l In conjunction withthepattern plate X,;a pointer or 'index rod Y,'is made tooperate.` It is sustained by av puppet frame Z, and s0 as to sldefreely towardgand vfrom,tliesaidl pattern plate, and be kept against it by a spring L, one end of which bears against a pin z', inserted in or through the rod Y, while the other end of said spring rests against the front standard of the said puppet frame Z. The forward end of the rod Y, is jointed to the upper end of an upright lever 70, which turns at its foot or lower end, on a joint pin or fulcrum, and in a direction transversely of the machine. Said lever rests against one arm of a horizontal bent lever m, whose fulcrum is at at. lThe other arm of the bent lever m, is jointed to one end of a rod o, whose other end is also jointed to another transversed rod or lever 79, vwhich turns upon a Center pin Q, at its front end; the said rod 7), being disposed as seen in the drawings. The other end of the rod p, plays in the groove of a sliding clutch r, placed on a horizontal shaft s, whose ournals revolve in boxes t, t, arranged as seen in the drawings. On said shafts is a toothed pinion u, which is made to run loosely on the shaft, and .to .gear with a gear wheel o, fixed on another and longer horizontal shaft w, disposed above the shafts, as seen in the drawings. The clutch should be so made to operate in connection with the said pinion lu, as to engage it with or disengage it from the shaft s, at pleasure, and in such manner that when so engaged and said shaft is put in revolution, the shaft will rotate the pinion, and thereby rotate the cam shaft w. 'Ihe shaft 'w has two cams fr, y, placed upon it as seen in Figs. 1, 3, and 4. These cams operate against a lay or bar a, which is placed directly in rear of the lay beam I, and is supported on two swords Z9', 0, which respectively turn at their lower ends on center pins so as to enable the bar a to be moved in directions toward or away from the lay beam I.

A spring cZ, is connected with the rod or lever 79,in such manner as to draw the clutch against or toward the pinion u, to the extent suiicient to clutch the said pinion to t-he shaft, and this whenever and while the lay beam I, ismoved forward toward the drills or bitts, so as to cause them to bore into and through the several brush blocks. When the lay beam I, is moved forward so as to bear the pattern plate against the index rod V,

the said index rod will be moved forward so as to carry with itt-he upper end of the lever 7c,` and thereby leave the bent lever free to be turned on its fulcrum and permit the retraction of the spring Z to the extent sufficient to operate or move the clutch in a manner proper to engage the pinionu, with its shaft. When the lay beam ismoved back the opposite eect takes placegthat is to say, the pinion is unclutched orv disengaged from the shaft.L j

The shafts, is revolved by "a belt'c, which is made to pass around the pulleys f', g; the former of which is Xed on the driving shaft, while the latter is placed on the shaft s.

An annulus or ring h', is attached by arms t", t, &c, `to the cogged wheel or plate R, as seen in the drawings. The attendant takes hold of this in order to rotate the wheel and pattern, and of course all the other cogged wheels on the lay beam.

A horizontal latch rod c, is attached to the upper part of the lay beam I, by two links or bars Z m', jointed to the beam so as to play up and down vertically. The said.

bar extends at its ends, beyond the said bars Z, m; and rests in notches of two platesor racks n, 0, attached to the upper ends of the swords of the lay beam I; the whole being arranged as seen in the drawings. The latch rod la 'is kept in place in any two yof said notches bymeans of one or more springs p 29', connected to it and the swords of the lay beam. By meansof such contrivances the lay beam may be adjusted to any desirable angle to the horizon, in order to cause the bitts to bore through the brush blocks in such inclined directions as may be necessary. The lay beams may be further balanced by weights g', g', suspended on levers 1"', r, attached to the lay beam by wires s', s', and arranged as seen in the drawings.

By means of our machinery as above described it will be readily seen how easily the lay beam I, may be moved in any desirable direction, and its various positions for boring simultaneously in each position a hole through each brush block adjusted by the pattern plate and index rod. As soon as the attendant of the machine adjusts the index pointer or rod to any indent of the pattern plate, andl draws the lay beam toward him so as to press the index rod against and cause it to move the lever c, the clutch r, will be thrown into `action upon the pinion 22, and will engage it with its shaft, so as to cause the camsm, y, to revolve and -force the bar a, against the lay beam I, to the extent sufficient to enable the bitts to bore entirely through, `or as far as may be necessary in their several brush blocks.

What we claim, as our invention is, l

l. The above described machine or combination for boring brush blocks; the said combination 'consisting of, the series `of revolving bitts, the index rod or pointer, the revolving pattern holder, patterns, block holders, and gear wheels, applied to the lay beam` I, sustained by universal 4joints as specified, together with the lay bar a', and other mechanism for forcing the lay beam and blocks, and pattern forward `against the bitts; all substantially as hereinabove set forth.

' 2. And as auxiliary thereto, we claim to the 'lay' beam I, movable transversely in such manner as before explained, in orour signatures this tenth day of April A. D. l(iler o cmse the bitts to pass through1 the `1848.

loc s in irections at such angles Wit the front face of eachof them, as may be de- 5 sirable to produce a proper spreading or i Haring of the several bunches of bristles Witnesses; which may be inserted in them.y R. H. EDDY, In testimony whereof We have hereto set F. GOULD. 

